1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASMAXP_PTRACE_H 3 #define _ASMAXP_PTRACE_H 4 5 #include <uapi/asm/ptrace.h> 6 7 8 #define arch_has_single_step() (1) 9 #define user_mode(regs) (((regs)->ps & 8) != 0) 10 #define instruction_pointer(regs) ((regs)->pc) 11 #define profile_pc(regs) instruction_pointer(regs) 12 #define current_user_stack_pointer() rdusp() 13 14 #define task_pt_regs(task) \ 15 ((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1) 16 17 #define current_pt_regs() \ 18 ((struct pt_regs *) ((char *)current_thread_info() + 2*PAGE_SIZE) - 1) 19 20 #define force_successful_syscall_return() (current_pt_regs()->r0 = 0) 21 22 static inline unsigned long regs_return_value(struct pt_regs *regs) 23 { 24 return regs->r0; 25 } 26 27 /* Helpers for working with the user stack pointer */ 28 static inline unsigned long user_stack_pointer(struct pt_regs *regs) 29 { 30 /* Valid for user-mode regs */ 31 return regs->usp; 32 } 33 34 #endif 35